Interval              MPECS Discovery Observations
2008                       0         0          290
2009                      45         0          764
2010                      70         0          783
2011                      36         0          737
2012                       9         0          136
2013                       0         0            0
2014                       0         0            0
2015                      21         0          516
2016                       2         0            0